Funny. I can't recall where but a few days ago I overheard a teenage say something like, "I wanted to make a Tinder account but I didn't have a FAcebook, so I had to go make that first."

Mind you, it seems like a really low quality user for FB and not something I would want to hang a bubbilicious valuation on for them -- unless FB's able to track her activity off FB as well. And I think this is the case.